DERIVATIVE FINANCIAL INSTRUMENTS 5 (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Reclassification Of Cash Flow Hedge Gain (Loss) [Line Items]
Maximum length of time hedged in cash flow hedge	14
Joint venture maximum length time hedged In cash flow hedge	21
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ (19)
Cash Flow Hedge Gain (Loss) To Be Reclassified Within Twelve Months For Noncontrolling Interest	(13)
San Diego Gas and Electric Company [Member]
Reclassification Of Cash Flow Hedge Gain (Loss) [Line Items]
Maximum length of time hedged in cash flow hedge	4
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	(12)
Southern California Gas Company [Member]
Reclassification Of Cash Flow Hedge Gain (Loss) [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ 0